World is getting smaller and smaller in a digital era but accurate and precise health care depends upon high-quality information. Attributes of patients, manufacturers, medicines, treatment systems, laboratory standards, hospitals, etc., are not identified in a real sense in many cases of development of healthcare data But due to unavailability of authentic information, it cannot be integrated for use of interoperability. Furthermore, an exchanged data must be understood by a user which does not exist in the present time. This paper aims to identify the role of core elements in health care. This paper provides a platform for identifying the role of each element by conducting a survey and analyzing it for semantic interoperability which is a prerequisite of Web Semantic. Survey reveals that interoperability in health care obtained only when the role of each element is identified in a holistic approach.

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